Discriminant

What is the discriminant formula?

• b - 4ac

• D = 0

• b² - 4ac

• -b+/-b² -4ac/2a

Tags

CCSS.HSA-REI.B.4B

The discriminant tell you the ______

• time

• y-intercept

• the solution

• type of roots

Tags

CCSS.HSA-REI.B.4B

If the discriminant is zero the quadratic has

• 1 real root

• 2 real roots

• 2 complex roots

• 1 real and 1 non real root

Tags

CCSS.HSA-REI.B.4B

Another name for non real roots in quadratic equation is

• real roots

• complex roots

• 1 real root

• no other name

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

When the discriminant is greater than zero the quadratic has

• 1 real root

• 2 real roots

• 3 root roots

• 2 non real roots

Tags

CCSS.HSA-REI.B.4B

When the discriminant is less than zero the quadratic has

• 1 real root

• 2 real roots

• 3 real roots

• 2 complex roots

Tags

CCSS.HSA-REI.B.4B

Complex roots is the same as

• 1 real root

• 2 real roots

• 3 real roots

• 2 non real roots

Tags

CCSS.HSN.CN.C.7

CCSS.HSN.CN.C.9

Find the discriminant 8x² -4x +5 =0

• -56

• 24

• -144

• 169

Tags

CCSS.HSA-REI.B.4B

4x² = 7

• -112

• -28

• 112

• 0

Tags

CCSS.8.EE.A.2

Find the discriminant x² -8x + 16 = 0

• 16

• 0

• -128

• 120

Tags

CCSS.HSA-REI.B.4B